Sen. John McCain (R-Ariz.) has put the smack-down on the GOP’s latest attempt to dismantle Obamacare, and this means it’s likely the monstrosity proposed by Sens. Lindsey Graham (R-S.C.) and Bill Cassidy (R-La.) will die a quick death.

That must surely bum out a few Republicans, who were hoping to pass the bill before the end of September, CNN reports.

In a statement, McCain said this:

“I cannot in good conscience vote for the Graham-Cassidy proposal. I believe we could do better, working together, Republicans and Democrats, and have not yet really tried. Nor could I support it without knowing how much it will cost, how it will (affect) insurance premiums, and how many people will be helped or hurt by it. Without a full CBO score, which won’t be available by the end of the month, we won’t have reliable answers to any of those questions.”

If you’re wondering what the CBO (Congressional Budget Office) is, it’s this in a nutshell:

It’s an independent, non-partisan office that analyzes the potential budgetary impact of proposed legislation,USA Today reports. Established by Congress in 1974, it operates using rules and regulations set by the House and Senate Budget committees.

And Twitter users lauded Sen. McCain for voicing his opposition, Mediaite reports. There’s been a virtual flood of tweets praising the Republican senator from Arizona.

So it appears that Sen. Paul doesn’t like the bill because it’s not strict enough. Perhaps it doesn’t kill enough people to suit him. Who the hell knows?

Trump will be appearing at a rally later Friday evening, and some Twitter users think Sen. McCain’s very public dissing of Graham-Cassidy may mean the president will be in one of his too-frequent bad moods: